Hoist trolley



V w. HEGARTY HOIST TROLLEY Filed y 12 1925 Y Fig. l.

Inventor Wiliium Hegav-t His Ab'borneg.

of track and readily removed for inspection from the track or the hoist from thet'rolley';

l 'atented Sept. 21, 1926.

. (UNITED) sr" team I i i COMPANYfA CORPORATION OF'NEW YORK:

HOIST TROIiLEY...

bl jlip plieation filedbMay lZ, i925. SerialjNo. 29,757.-

The; present invention relates to hoist trolleys andipr ovides animproved construction thereof. whereby the ,track wheels may be easily adjusted to run upon different sizes and re air without removin the trolle These desirable results, are obtained inaccordance with the preferred form'of'my invention, by providing. a stub axle for the track wheel which is unsecured .to the track wheel itself and has an enlarged portion exv ew, partially in section, of an I-beam hoist trolley embodying a preferred form of my invention; Fig. 2 is a view, partly in section, showing the assembly of the stub axle with the side frame and the trolley wheel; and

3 is a view partly in section, of a modified construction. of the stub axle and track wheel.

In Fig. 1 the parts of the hoist trolley shown comprise the side frames 10 and 11 which are secured in opposing spaced relation by the connecting yoke 12 which-is arranged to carry su table hoisting mechanism not shown in the drawing. The track wheels 13 and 14 which run upon the lower web of the I-beam track 15 are mounted upon the stub axles 16 and 17 respectively,

Each ofthe stub axles 16 and 17 is un secured to the track wheelsmounted thereupon and in the preferred form of my invention illustrated is. screw-threaded into the,

corresponding side frames 10 andll. As more clearly shown in Flg. 2, the screwthreaded portion 18 of the stub axle 16 is of larger diameter than the portion 19 upon which the track wheel is'mounted, preferably by means of anti-friction bearings, such as the ball bearings 20 illustrated. Preferably the enlarged portion 18 terminates in a shoulder 21, which serves to receive the end thrust of the track wheel, although the end of the stub axle may bear against a. portion i r es.

fwIn rAM r neaarmor BROOKLYN, NEW YORK, AssIeNoR To GENERAL. ELECTIHC of'the trackwheel as illustrated in Fig. 3 I

to accomplish the same purpose if desired.

A. lock nut 22 is provided for firmly'secur 7 ing thestub axlein theside frame and'a suit 1e recess 23 may be provided in the exterior end of the stub axle for receiving a socket wrench or screw-driver to facilitatescrewing I and unscrewing thestub axle. I

From the preceding descriptionfitiwill be apparent that upon loosening th'lOCk nutj'22 and screwing the stub axle 16 into the frame 10 the track Wheel 13 maybe laterally adjusted to accommodate the trol-' ley to various sizes of tracks Furthermore;

by simply unscrewing the stub axle 16 from the side frame 10-Ithe axle, as well as 'the track wheel 13, may be easily, removed. This is due to the fact that the stub axle, frame, and corresponding track wheel are so pro portioned and arranged as to permit unrestrained upward or sidewise movement of the track wheelctransverse of its axis of rdtation upon removal of the stub. axle. Hence,

the track wheel 13 may be freely lifted from V the track rail or rolled therealong and thus readily removed from the hoist trolley frame after the stub axle 18 is unscrewed from the exterior of the frame. each stub axle of the usual formof fourwheel trolley, having two wheels on each side of the supporting track, is constructed in accordance with my invention, any one of the stub axles and the correspondingv track wheels may be readily removed without dismounting the trolley from the track or removing the hoist from the trolley.

In the modification illustrated in Fig. 3, the trolley wheel 13 is provided with a suitable recess 24 for receiving the roller bearings 25 and. one end of the stubaxle 16 is rounded so as to bear against the bottom of Thus, if I a the recess in order to receive the end thrust of the track wheel.

If desired, the exteriorend of the stubaxle may be squared as shown to permit ro-' tation of the axle by an ordinary wrench. A dust guard26 may be'interposed between the track wheel 13 and the endof the enlarged screw-threaded portion-of stub axle 16' in order to -enclosethe roller-bearings 25, if deslred. S nce the squared end of stub axle '16 is accessible from theexterior of the V V side frame 10, the stub axle may be readily turned tov permit adjustment or removal of the track wheel v13.

I operating .tracl'r I I 20' through an openlng' in the corresponding side fran'ie, the said axle, said frame and cor- What I claim as new and desire to secure by Letters Patent of the United States, is: 1. In a hoist trolley, the combination of side frames," a stub axle on each side frame, 7 and a track Wheel mounted on each stub axle, at least one of said stub axles extending through an opening in the correspond ing side frame and said axle, frame, and corresponding track Wheel arranged to permit 10 unrestrained'movement of the track Wheel transverse its axis'uponi removal of the axle through the opening from the exterior of I the frame.v

responding track Wheel being arranged to permit unrestrained movementof the track --Wheel transverse its. axis of rotatlon upon '2 removalof the axle through the said opening from the exterior of the frame.

3x111 ahoist trolley, the combination of sid'eframega stub axleoneach frame, a track Wheel mounted on each axle, at least one of said axles being unsecured to: the

7 track Wheel mounted thereupon and having an enlarged portion extending through an opening in the corresponding side frame and adjustably and detachably secured thereto to permit both lateral adjustment of the corresponding track Wheeland said being arranged to permit movement of the track Wheel transverse its axis of rotation upon removal of the stub axle through the said opening from the exterior of the frame;

axle, frame and corresponding track Wheel unrestrained 4. In a hoist trolley, the combination of I side frames disposed inspaced opposing re lation, a stub axle I on each side frame, a track Wheel mounted on each axle, at least one of said stub axles being'unseoured to the track Wheel mounted thereupon, and

having an enlarged portion screw-threaded into an opening in the corresponding side frame and provided with means on its outer ends for rotating the axle to'lat-erally adjust the position of th e track Wheel mounted thereupon, and said axle, frame and corresponding track Wheel being arranged to permit unrestrained movement of the track I Wheel in a predetermined direction trans verse the axis of rotation of the Wheel upon removal of or to remove the axle through the said opening from the exterior of the frame.

' In Witness whereof, I have hereunto set my hand this 8th day of MaI1925.

. v VWILLIAM EGARTY. 

